Question

For a first order reaction, if 'a' is the initial concentration of a reactant, then the half life time is

• A. independent of $a$
• B. is proportional to $a$
• C. is proportional to $a^2$
• D. is proportional to $a^3$

Answer 1

The correct option is A independent of $a$

For the first order reaction, $t_{1/2}=\frac{ln2}{k}$.

Hence, it is independent of 'a'.